19902025

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{293}}^1$

素因数の和:346

約数の個数: 48

約数和(自身を含む): 30623040

約数和(自身を除く): 10721015

約数列:

[1, 5, 11, 13, 19, 25, 55, 65, 95, 143, 209, 247, 275, 293, 325, 475, 715, 1045, 1235, 1465, 2717, 3223, 3575, 3809, 5225, 5567, 6175, 7325, 13585, 16115, 19045, 27835, 41899, 61237, 67925, 72371, 80575, 95225, 139175, 209495, 306185, 361855, 796081, 1047475, 1530925, 1809275, 3980405, 19902025]

約数ペア:

[(1, 19902025), (5, 3980405), (11, 1809275), (13, 1530925), (19, 1047475), (25, 796081), (55, 361855), (65, 306185), (95, 209495), (143, 139175), (209, 95225), (247, 80575), (275, 72371), (293, 67925), (325, 61237), (475, 41899), (715, 27835), (1045, 19045), (1235, 16115), (1465, 13585), (2717, 7325), (3223, 6175), (3575, 5567), (3809, 5225)]